Finding the Third Proportional to 12,998.53 and 18,574.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,998.53 : 18,574.31 = 18,574.31 : x
2. Step 2: Convert to fraction form
   12,998.53/18,574.31 = 18,574.31/x
3. Step 3: Cross multiply
   12,998.53x = 18,574.31 × 18,574.31
4. Step 4: Simplify right side
   12,998.53x = 345,005,084.85
5. Step 5: Solve for x
   x = 345,005,084.85/12,998.53
6. Step 6: Final answer
   x = 26,541.85